Nailing-block.



E. B. COSBY. NAILING BLOCK. APPLICATION FILED JULY 17, 19'6- Patented Apr. 24, 1917.

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Specification of Letters Patent.

Patented Apr. 24, 1917.

Application filed July 17, 1916. Serial No. 109,772.

To all whom it may concern:

Be it known that I, EDWIN B. CosBY, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Nailing-Blocks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to nailing blocks or wall plugs, and has for its object to provide blocks of this character which may be inserted in masonry walls or concrete structures at the time of their construction to provide supports for moldings, base boards, casings, jambs, plaster grounds, metal grounds, corner beads, etc., and for various other uses.

It. is also an object of the invention to provide blocks of various sizes and thicknesses to adapt the same for all purposes where nailing blocks are desirable or essential and to provide such blocks initially in the form of strips of a plurality of units each, which may be bound in bundles of a suitable number to facilitate their handling or shipping, and from which strips the blocks may be cut in lengths of one or more units as desired, to adapt the same to the individual purpose for which they are to be used.

In accomplishing these objects I have provided details of structure, the preferred forms of which are hereinafter described and illustrated in the accompanying drawings, whcrein:

Figure I is a perspective view of a wall showing nailing blocks embodying my invention, inserted therein.

Fig. 11 is a perspective view illustrating the use of such blocks in a concrete column.

Fig. III is a perspective view of a single unit block.

Fig. IV is a perspective view of a strip which may be cut to form the nailing blocks of various lengths. I

Fig. V is a block used for a wall of tile or gypsum block construction.

Referring more in detail to the drawings:-

1 designates a wall comprising juxtaposed building elements 2, such as brick, or stone, which are set in and bound together by the mortar joints 3, and embedded in the joints at regular intervals or where required for nailing purposes are blocks or plugs 4, which embody the present invention and into which nails may be driven for the various purposes heretofore mentioned.

It is the practice of many builders, when nailing blocks are required, to build the walls first, and insert nailing blocks 'later, by drilling holes in the wall and driving plugs therein, or by driving wedges within joints between the wall elements, but plugs of this character prove unsatisfactory as it involves a loss of time and expense to insert the plugs and due to their shape and the shrinkage thereof, they ultimately become loose and have to be replaced. I have, therefore,

designed the present blocks, which may be provided at a minimum cost, and are preferably of wood suitable for receiving nails, and which may be embedded within a wall at the time of its construction, so that when the mortar becomes set thereabout the blocks are securely held therein.

As before mentioned I prefer to first prepare the blocks in the form of strips. of a plurality of units each as shown in Fig. V; the said strips having spaced, elongated notches 5 in their opposite edges, which are alternately placed throughout their lengths, and what I term as a single unit block comprising that portion formed by cutting a strip transversely at the centers of two adjacent notches.

When a block of a single unit (Fig. III) is out from a strip it will be seen that the body portion thereof has an inwardly extending notch 5 at one edge, and an outwardlv extending projection 6 at its opposite edge, which is due to the manner in which the block is cut from the strips, and it will also be noted that when such a block is inserted or embedded in the mortar it is substantially keyed by the said projection and notched portions so that it is impossible for it to slip or become loosened within the wall.

To use blocks or nailing plugs of'this character they are first cut from strips in lengths suitable for the use to which they are to be put, and are embedded in the soft mortar as the wall is constructed, with the ends of the blocks left projecting from the Wall and when the mortar has become setjoints of an ordinary brick Wall or may be made in the size of bricks, and built into the Wall to serve as nailing blocks for base boards, or door casings. Neither do I Wish to confine the notch to the particular shape shown, but also to include notches of semi circular or rectangular shape.

Fig. II illustrates the use of such blocks in a concrete column; When placed in columns of this nature the blocks are first cut and tacked in the form before the concrete is poured therein, at corners, faces, angles, or sofiits, and when the forms are removed Will be left embedded in the column to serve as supports for casings, Wainscoting, or the like.

' The blocks are especially adapted for the lining of plaster grounds, and When used for this purpose are placed in the Wall and left projecting therefrom and are later lined and cut the desired length, so that grounds may be tacked thereon, and an even plaster surface given the Wall, regardless of unevenness of the Wall.

Fig. V shows a modified form of block having notches at all edges; blocks of this character being especially adapted to thin tile, or gypsum block Walls.

With blocks so constructed, it is apparent that the projecting portions 6 of the block Will act as a key to lock the block in the joint and the mortar Within the notch Will form a similar key, so that the double key lock will effectively hold the block Within the Wall, and the same Will serve substantially for the various purposes mentioned.

It is also apparent that by providing the blocks initially in the form of strips, so that they may be tied in bundles, a means is provided for facilitating the handling and shipping of the same and the block may be cut therefrom in the lengths desired.

Having thus described my invention What I claim as new therein and desire to secure by Letters-Patent, is

1. A nailing strip comprising a flat body having a notch in one edge forming a mortar key recess and nailing surfaces at opposite ends of the recess, and having a projection from its other edge opposite the notch, forming key recesses at opposite ends of the projection.

2. A nailing strip comprising a flat body, having a plurality of spaced notches in each edge forming alternating recesses and pro jections throughout the length of the strip, the notches in one edge alternating with those in the opposite edge to stagger the flat faces of the strips, for the purpose set forth.

In testimony whereof I aiiix my signature.

EDWIN B. COSBY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

